President Volodymyr Zelenskyy says Ukraine has to confront the possibility of losing its dignity or risking the loss of a key partner as it figures out how to respond to a U.S. peace proposal to end the war with Russia.

The U.S. plan contains many of Russian President Vladimir Putin's longstanding demands, while offering limited security guarantees to Ukraine.

The Kremlin says it has not officially received the 28-point peace plan.

And a European government official who spoke to the AP on condition of anonymity said the plan wasn't officially presented to Ukraine’s European backers either.

The plan foresees Ukraine handing over territory to Russia, something Zelenskyy has repeatedly ruled out.

It reduces the size of its army and blocks its route to NATO membership.

U.S. President Donald Trump said that he wants an answer from Zelenskyy on the plan by Thursday, but says an extension is possible to finalize the terms.